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PANTEGO, Tex. — Two horses were killed last week when a swarm of bees attacked the horses and their owner in the backyard of a Texas home.

Kristen Beauregard says she had just finished exercising her two horses Wednesday night when what she described as a “dark cloud” of bees suddenly attacked.

“It was just black out here. It looked like nighttime out here,” Beauregard said.

Beauregard says she immediately jumped into her swimming pool and instructed her 1-year-old Shetland pony, Trump, to do the same.

“And I watched that horse who trusted me to always, always take care of him and I watched him look up at me in so much pain and thrash around and look at me like — why aren’t you fixing this?” Beauregard recalled.

Both Trump and Beauregard’s other horse, a 6-year-old miniature show horse named Chip, died after being stung thousands of times.

Officials believe the hive of an estimated 30,000 bees grew inside the wall of a nearby shed. The bees are being tested to determine if they are Africanized killer bees.